Legei pou Herakleitos hoti panta chorei kai ouden menei.
TO regard all things and principles of things as inconstant modes or fashions has more and more become the tendency of modern thought. Let us begin with that which is without–our physical life. Fix upon it in one of its more exquisite intervals, the moment, for instance, of delicious recoil from the flood of water in summer heat. What is the whole physical life in that moment but a combination of natural elements to which science gives their names? But those elements, phosphorus and lime and delicate fibres, are present not in the human body alone: we detect them in places most remote from it. Our physical life is a perpetual motion of them–the passage of the blood, the waste and repairing of the lenses of the eye, the modification of the tissues of the brain under every ray of light and sound– processes which science reduces to simpler and more elementary forces. Like the elements of which we are composed, the action of these forces extends beyond us: it rusts iron and ripens corn. Far out on every side of us those elements are broadcast, driven in many currents; and birth and gesture and death and the springing of violets from the grave are but a few out of ten thousand resultant combinations. That clear, perpetual outline of face and limb is but an image of ours, under which we group them–a design in a web, the actual threads of which pass out beyond it. This at least of flamelike our life has, that it is but the concurrence, renewed from moment to moment, of forces parting sooner or later on their ways.
Or if we begin with the inward world of thought and feeling, the whirlpool is still more rapid, the flame more eager and devouring. There it is no longer the gradual darkening of the eye, the gradual fading of colour from the wall–movements of the shore-side, where the water flows down indeed, though in apparent rest–but the race of the mid-stream, a drift of momentary acts of sight and passion and thought. At first sight experience seems to bury us under a flood of external objects, pressing upon us with a sharp and importunate reality, calling us out of ourselves in a thousand forms of action. But when reflexion begins to play upon these objects they are dissipated under its influence; the cohesive force seems suspended like some trick of magic; each object is loosed into a group of impressions–colour, odour, texture–in the mind of the observer. And if we continue to dwell in thought on this world, not of objects in the solidity with which language invests them, but of impressions, unstable, flickering, inconsistent, which burn and are extinguished with our consciousness of them, it contracts still further: the whole scope of observation is dwarfed into the narrow chamber of the individual mind. Experience, already reduced to a group of impressions, is ringed round for each one of us by that thick wall of personality through which no real voice has ever pierced on its way to us, or from us to that which we can only conjecture to be without. Every one of those impressions is the impression of the individual in his isolation, each mind keeping as a solitary prisoner its own dream of a world. Analysis goes a step farther still, and assures us that those impressions of the individual mind to which, for each one of us, experience dwindles down, are in perpetual flight; that each of them is limited by time, and that as time is infinitely divisible, each of them is infinitely divisible also; all that is actual in it being a single moment, gone while we try to apprehend it, of which it may ever be more truly said that it has ceased to be than that it is. To such a tremulous wisp constantly re-forming itself on the stream, to a single sharp impression, with a sense in it, a relic more or less fleeting, of such moments gone by, what is real in our life fines itself down. It is with this movement, with the passage and dissolution of impressions, images, sensations, that analysis leaves off–that continual vanishing away, that strange, perpetual weaving and unweaving of ourselves.